1. Field of the Invention
[0001] The present invention relates to a respirator, and particularly to a continuous positive
airway pressure device.
2. Description of Related Art
[0002] A conventional respirator, particularly a conventional continuous positive airway
pressure device, mainly has a shell, and an inlet and an outlet are defined through
the shell. The conventional continuous positive airway pressure device has a fan disposed
inside the shell. Since a portion of the shell around the inlet is normally smooth,
air outside the shell quickly flows through the inlet into an interior of the shell,
wherein most portion of the air flows into the fan from a middle of a top of the fan,
is compressed and pushed, and flows outside the shell from the outlet, and the other
portion of the air flows through a gap between the fan and a portion of the shell
near the inlet.
[0003] However, since the conventional continuous positive airway pressure device has a
small volume, a flow path of the air from the inlet, through the fan, and to the outlet
is short, and furthermore the portion of the air flowing through the opening makes
shrill and annoying noises. Thereby, users may feel uncomfortable after applying the
conventional continuous positive airway pressure device for a period of time and may
even have low sleep quality when applying it during sleep.
[0004] To overcome the shortcomings of the conventional continuous positive airway pressure
device, the present invention tends to provide a continuous positive airway pressure
device to mitigate or obviate the aforementioned problems.
[0005] The main objective of the present invention is to provide a continuous positive airway
pressure device that has a diversion sound-absorbing foam pad and a partition to lengthen
a flow path of air and reduce noises in use.
[0006] The continuous positive airway pressure device has a shell, a diversion sound-absorbing
foam pad, a blower, and a partition. The shell has an upper shell body, a lower shell
body connected to the upper shell body, an interior space, and an inlet and an outlet
both fluidly communicating with the interior space of the shell. The diversion sound-absorbing
foam pad is disposed in the interior space of the shell and has a bottom board, a
first side wall, a second side wall, a third side wall, and a fourth side wall. The
first side wall, the second side wall, the third side wall, and the fourth side wall
protrude from the bottom board, are sequentially arranged, and enclose a containing
space of the diversion sound-absorbing foam pad. The diversion sound-absorbing foam
pad has a blower seat protruding from the bottom board, disposed in the containing
space, and having an opening. The opening is recessed on the blower seat, fluidly
communicates with the containing space, and is disposed near the fourth side wall.
The diversion sound-absorbing foam pad forms an airflow passage, and the airflow passage
extends tortuously inside the shell and around the diversion sound-absorbing foam
pad, sequentially passes by a top surface of the first side wall, a top surface of
the second side wall, two opposite ends of the third side wall, and the fourth side
wall, and fluidly communicates with the opening. The blower is disposed in the containing
space, is disposed on the blower seat, and has a blower fluid inlet and a blower fluid
outlet. The blower fluid inlet fluidly communicates with the opening of the blower
seat, and the blower fluid outlet fluidly communicates with the outlet of the shell.
The partition is fixed on the lower shell body, covers the blower and the diversion
sound-absorbing foam pad, and has a leading hole. The leading hole is defined through
the partition, fluidly communicates with a portion of the airflow passage near the
first side wall, and fluidly communicates with the inlet of the shell.
[0007] Other objectives, advantages and novel features of the invention will become more
apparent from the following detailed description when taken in conjunction with the
accompanying drawings.
[0008] In the drawings:
Fig. 1 is a perspective view of a continuous positive airway pressure device of a
preferred embodiment in accordance with the present invention;
Fig. 2 is another perspective view of the continuous positive airway pressure device
in Fig. 1;
Fig. 3 is an exploded view of the continuous positive airway pressure device in Fig.
1;
Fig. 4 is a sectional side view of the continuous positive airway pressure device
in Fig. 1;
Fig. 5 is a perspective view of a partition of the continuous positive airway pressure
device in Fig. 1;
Fig. 6 is a partial enlarged view of the partition in Fig. 5; and
Figs. 7 to 10 depict a flow path of air in the continuous positive airway pressure
device in Fig. 1.
[0009] With reference to Figs. 1 to 3, a continuous positive airway pressure device of a
preferred embodiment in accordance with the present invention has a shell having an
upper shell body 10 and a lower shell body 20, a diversion sound-absorbing foam pad
30, a blower 40, a partition 50, and a fluid rectifier 60.
[0010] With reference to Figs. 1 to 3, the upper shell body 10 and the lower shell body
20 are connected to each other to form the shell. The shell encloses an interior space,
an inlet 11, and an outlet 21, and the inlet 11 and the outlet 21 are respectively
located at two opposite sides of the shell.
[0011] With reference to Figs. 3, 4, 9, and 10, the diversion sound-absorbing foam pad 30
is made of a foam material and has a bottom board 31, a first side wall 32, a second
side wall 33, a third side wall 34, and a fourth side wall 35. The bottom board 31
is disposed inside the lower shell body 20. The first side wall 32, the second side
wall 33, the third side wall 34, and the fourth side wall 35 protrude from the bottom
board 31, are arranged sequentially, and enclose a containing space of the diversion
sound-absorbing foam pad 30. The diversion sound-absorbing foam pad 30 has a blower
seat 36 protruding from the bottom board 31 and disposed inside the containing space.
The blower seat 36 has an opening 361 recessed on a side of the blower seat 36 near
the fourth side wall 35, and the opening 361 extends inward and roughly to a center
of the blower seat 36 and fluidly communicates with the containing space of the diversion
sound-absorbing foam pad 30.
[0012] With reference to Figs. 3, 4, and 8 to 10, the first side wall 32, the second side
wall 33, the third side wall 34, and the fourth side wall 35 of the diversion sound-absorbing
foam pad 30, the upper shell body 10, and the lower shell body 20 together enclose
an airflow passage. The first side wall 32, the second side wall 33, and the fourth
side wall 35 are tightly attached to an internal wall of the lower shell body 20.
An upper portion of the third side wall 34 is tightly attached to the internal wall
of the lower shell body 20, and a lower end portion of the third side wall 34 is spaced
from the internal wall of the lower shell body 20. The airflow passage extends tortuously
inside the shell and around the diversion sound-absorbing foam pad 30 and sequentially
passes by a top surface of the first side wall 32, a top surface of the second side
wall 33, two opposite ends of the third side wall 34, and the fourth side wall 35.
Specifically, the airflow passage extends curvedly from the top surface of the first
side wall 32 to the top surface of the second side wall 33, extends downward from
the top surface of the second side wall 33, and then bends at one of the two opposite
ends of the third side wall 34; then, the airflow passage extends toward the other
one of the two opposite ends of the third side wall 34, extends from the third side
wall 34 to the fourth side wall 35, and fluidly communicates with the opening 361.
[0013] With reference to Figs. 8 and 9, in the preferred embodiment, the airflow passage
has multiple flow openings 37, and the multiple flow openings 37 are respectively
located between the first side wall 32 and the second side wall 33 (an opening for
airflow to flow from the top surface of the first side wall 32 to the top surface
of the second side wall 33), between the second side wall 33 and the third side wall
34, and between the third side wall 34 and the fourth side wall 35. With reference
to Fig. 8, each one of the multiple flow openings 37 is rectangular and has two length
edges L and two width edges W. A ratio of a length of said length edge L to a length
of said width edge W, simply regarded as a length-width ratio, is preferably between
1:0.4 and 1:0.7, but the present invention is not limited to the above disclosure;
configurations of the diversion sound-absorbing foam pad 30 may change according to
needs of users in other embodiments.
[0014] With reference to Figs. 3 and 4, the blower 40 has a blower fluid inlet 41 and a
blower fluid outlet 42. The blower 40 is disposed on the blower seat 36, and the blower
fluid inlet 41 of the blower 40 fluidly communicates with the opening 361 of the blower
seat 36. The blower fluid outlet 42 is located through the outlet 21 of the shell.
The blower 40 is conventional, and thus detailed constructions of the blower 40 are
not described.
[0015] With reference to Figs. 3, 5, and 6, the partition 50 has a shape corresponding to
a shape of a cover body of the blower 40, and the partition 50 has a leading hole
51 and a heat dissipating hole 52 both defined through the partition 50. The partition
50 covers the blower 40 and the diversion sound-absorbing foam pad 30, and the leading
hole 51 fluidly communicates with the inlet 11 of the shell and a portion of the airflow
passage near the first side wall 32. In the preferred embodiment, the partition 50
has a dissipating cover 55, a surrounding bottom board 54, and a leading board 53.
The surrounding bottom board 54 is annularly connected to a surrounding edge of the
heat dissipating cover 55, and the leading hole 51 is defined through the surrounding
bottom board 54. The leading board 53 protrudes from a position of the surrounding
bottom board 54 near the leading hole 51.
[0016] With reference to Fig. 6, the leading board 53 has two opposite side surfaces, and
one of the two opposite side surfaces of the leading board 53 is disposed toward the
leading hole 51 and is defined as a central surface 531. The central surface 531 is
a convex surface curved toward the leading hole 51 and has a central line. The central
line is configured to define an imaginary vertical surface I, and a first angle A
is defined between the imaginary vertical surface I and the other one of the two opposite
side surfaces of the leading board 53. The first angle A is preferably between 70
degrees and 89 degrees. The leading board 53 has two end surfaces 532, and each one
of the two end surfaces 532 extends outward from a respective one of two opposite
side edges of the central surface 531. Each one of the two end surfaces 532 is configured
to define a second angle B between said end surface 532 and the central surface 531,
and the second angle B is preferably between 90 degrees and 140 degrees.
[0017] With reference to Figs. 3 and 4, a position of the heat dissipating hole 52 corresponds
to a position of the blower 40 and the heat dissipating hole 52 is configured for
heat dissipation of the blower 40. The partition 50 is fixed on an upper edge of the
lower shell body 20 to cover the blower 40 and the diversion sound-absorbing foam
pad 30. In other embodiments, configurations of the partition 50 and its leading board
53 may change according to needs of the users and are not limited to the preferred
embodiment.
[0018] With reference to Figs. 3 and 4, the fluid rectifier 60 is a hollow tube and has
multiple surrounding walls 61 disposed in an interior of the fluid rectifier 60. The
multiple surrounding walls 61 are arranged at spaced intervals and divide the interior
of the fluid rectifier 60 into multiple passages. The continuous positive airway pressure
device further has at least one detector 62 disposed to the fluid rectifier 60 and
configured to detect flow volume and flow velocity of airflow in the fluid rectifier
60. In the preferred embodiment, the fluid rectifier 60 is disposed in the airflow
passage and is disposed between the internal wall of the lower shell body 20, the
third side wall 34, and the bottom board 31. In other embodiments, configurations
and position of the fluid rectifier 60 may change according to needs of the users
and are not limited to the preferred embodiment.
[0019] In use of the continuous positive airway pressure device, with reference to Figs.
1, 3, and 7 to 10, direction of airflow is illustrated by arrows in the figures. The
blower 40 makes air outside the shell flow into the continuous positive airway pressure
device from the inlet 11 of the shell, and the air is then led by the leading board
53 to flow downward into the airflow passage from the leading hole 51. Afterwards,
the air flows by said top surfaces of the first side wall 32 and the second side wall
33, flows downward through said flow opening 37 between the second side wall 33 and
the third side wall 34, and flows into the fluid rectifier 60 from one of two opposite
ends of the fluid rectifier 60. Then, the air flows out from the other one of the
two opposite ends of the fluid rectifier 60 and flows through the opening 361 near
the fourth side wall 36. Finally, the air enters the blower 40 from the blower fluid
inlet 41 and flows out from the blower fluid outlet 42. By multiple bends in the flowing
path of the air in the continuous positive airway pressure device described above,
noises generated while the air flows are apparently reduced, and muting effect of
the continuous positive airway pressure device can be improved.
[0020] In the above description of the preferred embodiment, the smooth and curved surface
on the leading board 53 and the multiple passages formed inside the fluid rectifier
60 are both configured to adjust airflow and help the air to flow more fluently in
the continuous positive airway pressure device of the present invention.
[0021] Even though numerous characteristics and advantages of the present invention have
been set forth in the foregoing description, together with details of the structure
and features of the invention, the disclosure is illustrative only. Changes may be
made in the details, especially in matters of shape, size, and arrangement of parts
within the principles of the invention to the full extent indicated by the broad general
meaning of the terms in which the appended claims are expressed.
1. A continuous positive airway pressure device
characterized in that the continuous positive airway pressure device comprises:
a shell having
an upper shell body (10);
a lower shell body (20) connected to the upper shell body (10);
an interior space; and
an inlet (11) and an outlet (21) both fluidly communicating with the interior space
of the shell;
a diversion sound-absorbing foam pad (30) disposed in the interior space of the shell
and having
a bottom board (31);
a first side wall (32), a second side wall (33), a third side wall (34), and a fourth
side wall (35) protruding from the bottom board (31) and arranged sequentially;
a containing space enclosed by the first side wall (32), the second side wall (33),
the third side wall (34), and the fourth side wall (35); and
a blower seat (36) protruding from the bottom board (31), disposed in the containing
space, and having
an opening (361) recessed inward on the blower seat (36), fluidly communicating with
the containing space, and disposed near the fourth side wall (35); and
wherein the diversion sound-absorbing foam pad (30) forms an airflow passage, and
the airflow passage extends tortuously inside the shell and around the diversion sound-absorbing
foam pad (30), sequentially passes by a top surface of the first side wall (32), a
top surface of the second side wall (33), two opposite ends of the third side wall
(34), and the fourth side wall (35), and fluidly communicates with the opening (361);
a blower (40) disposed in the containing space, disposed on the blower seat (36),
and having
a blower fluid inlet (41) fluidly communicating with the opening (361) of the blower
seat (36) of the diversion sound-absorbing foam pad (30); and
a blower fluid outlet (42) fluidly communicating with the outlet (21) of the shell;
and
a partition (50) fixed on a top edge of the lower shell body (20), covering the blower
(40) and the diversion sound-absorbing foam pad (30), and having
a leading hole (51) defined through the partition (50), fluidly communicating with
a portion of the airflow passage near the first side wall (32), and fluidly communicating
with the inlet (11) of the shell.
2. The continuous positive airway pressure device as claimed in claim 1, wherein
the partition (50) has
a heat dissipating cover (55) having a surrounding edge;
a surrounding bottom board (54) annularly connected to the surrounding edge; and
a leading board (53) protruding from a position of the surrounding bottom board (54)
near the leading hole (51);
the leading hole (51) is disposed on the surrounding bottom board (54); and
the leading hole (51) and the inlet (11) of the shell are both disposed on a side
of the continuous positive airway pressure device.
3. The continuous positive airway pressure device as claimed in claim 2, wherein
the leading board (53) has two opposite side surfaces;
one of the two opposite side surfaces of the leading board (53) is disposed toward
the leading hole (51), is defined as a central surface (531), and is a convex surface
curved toward the leading hole (51);
the central surface (531) has a central line configured to define an imaginary vertical
surface (I); and
a first angle (A) is defined between the imaginary vertical surface (I) and the other
one of the two opposite side surfaces of the leading board (53) and is between 70
degrees and 89 degrees.
4. The continuous positive airway pressure device as claimed in claim 3, wherein
the leading board (53) has two end surfaces (532);
the central surface (531) is disposed between the two end surfaces (532);
each one of the two end surfaces (532) extends outward from a respective one of two
opposite side edges of the central surface (531);
each one of the two end surfaces (532) is configured to define a second angle (B)
between the central surface (531) and said end surface; and
the second angle (B) is between 90 degrees and 140 degrees.
5. The continuous positive airway pressure device as claimed in any one of claims 1 to
4, wherein the continuous positive airway pressure device has a fluid rectifier (60)
being a hollow tube and disposed in the airflow passage.
6. The continuous positive airway pressure device as claimed in claim 5, wherein
the fluid rectifier (60) has multiple surrounding walls (61) disposed in an interior
of the fluid rectifier (60); and
the multiple surrounding walls (61) are arranged at spaced intervals and divide the
interior of the fluid rectifier (60) into multiple passages.
7. The continuous positive airway pressure device as claimed in claim 6, wherein the
continuous positive airway pressure device has at least one detector (62) disposed
to the fluid rectifier (60) and configured to detect a flow volume and a flow velocity
of an airflow in the fluid rectifier (60).
8. The continuous positive airway pressure device as claimed in claim 2, wherein
the partition (50) has a heat dissipating hole (52) defined through the partition
(50); and
a position of the heat dissipating hole (52) corresponds to a position of the blower
(40).
9. The continuous positive airway pressure device as claimed in claim 1, wherein
the airflow passage has multiple flow openings (37);
the multiple flow openings (37) are respectively located between the first side wall
(32) and the second side wall (33), between the second side wall (33) and the third
side wall (34), and between the third side wall (34) and the fourth side wall (35);
and
each one of the multiple flow openings (37) is rectangular and has a length-width
ratio between 1:0.4 and 1:0.7.